Some practical guidance, and interesting history, about a common mistake.
Comedian ISMO on what separates a boot from a trunk
A simple way to keep them apart. (Most of the time.)
You don't have to end all your adverbs in -ly to talk right.
They started as same word, but their meanings have drifted apart over time.
Is it all the same anyway?
The most common vowel sound in English causes many spelling problems.